/*! 头部注释 by HitoTright */
.traffic-light .light {
  display: inline-block;
  background: url(//lh3.googleusercontent.com/-YWLqWZXDYHU/VmWC7GHoAuI/AAAAAAAACgk/nXvEmSWAhQU/s800/light.png) no-repeat 0 0;
  background-size: auto 100%;
  overflow: hidden;
  width: 70px;
  height: 164px;
}
.traffic-light .light.red {
  background-position: 0,0;
}
.traffic-light .light.yellow {
  background-position: -78px, 0;
}
.traffic-light .light.green {
  background-position: -156px, 0;
}
